NoPistons -Mazda Rx7 & Rx8 Rotary Forum - Poor Coolant Curculatiion

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- - Poor Coolant Curculatiion (https://www.nopistons.com/2nd-generation-specific-17/poor-coolant-curculatiion-21340/)

Quote:

Originally Posted by ryosuke_fc' date='Aug 7 2003, 02:39 PM

Antifreeze is also used to prevent corrosion. I think you might have crap growing in your cooling system if you did that. :-/

So, what if I ran 90% distilled, 10% antifreeze? Anyone done that?

Quote:

Originally Posted by Baldy' date='Aug 8 2003, 04:46 AM

[quote name='attomica' date='Jul 25 2003, 05:34 PM'] - Stay away from orange coolant. It's corrosive to a rotary engine's seals.

how bad is the orange coolant? I have it in mine. [/quote]

Dex-cool or their equivalents have shown that when mixed with normal prestone ethylene glycol with have a weird effect, it causes the mixture to coagulate (little blobs of crud) in the cooling system, Unless you flush the complete system of all the old green, the orange will cause problems down the road as the stuff clogs the radiator and heater core (this ussually shows up in the heater core first and exposes its problem as the drivers begin using defroster and heat in the fall months) As far as the chemical compatibility with the coolant seals on a rotary, I am not sure.

Quote:

Originally Posted by kkw4p' date='Aug 7 2003, 04:35 PM

So, what if I ran 90% distilled, 10% antifreeze? Anyone done that?

I run 80/20 year round and its fine.. more water is better but you still need some antifreeze